Third Nexus Group Limited
Senior Java Architect
Job Description
Salary: £100,000 - 120,000 per year
Requirements:- 15+ years of software engineering experience.
- 8+ years in Solution Architecture, Enterprise Architecture, or Principal Engineering roles.
- Proven experience delivering enterprise-scale Banking and Payment solutions.
- Expert-level knowledge of Java, Spring Boot, Spring Cloud, and Microservices.
- Deep expertise in Messaging Hub architecture.
- Strong experience with Kafka, NATS, and event streaming platforms.
- Expert understanding of integration patterns, enterprise integration architecture, messaging patterns, API architecture, and event-driven architecture.
- Strong expertise in Oracle and PostgreSQL.
- Experience with data modelling, performance tuning, HA/DR architecture, and transaction-heavy systems.
- Exceptional stakeholder management and executive communication skills.
- Ability to influence senior leadership and engineering organizations.
- Strong architectural documentation and presentation capabilities.
- Experience leading globally distributed teams.
- Strategic thinker with a hands-on engineering mindset.
- Banking or Financial Services industry background preferred.
- Experience with large-scale modernization and transformation programs preferred.
- TOGAF, Kubernetes, Cloud, or Architecture certifications preferred.
- Experience building AI-enabled engineering organizations preferred.
- Exposure to GenAI and Enterprise LLM integration patterns preferred.
- Lead the architecture, design, and delivery of next-generation Banking and Payment platforms.
- Define enterprise architecture and drive engineering excellence.
- Lead large backend engineering teams.
- Leverage AI-powered development practices to accelerate software delivery and innovation.
- Support enterprise-scale architecture across banking, payments, messaging, integration, cloud-native engineering, and AI-driven delivery.
- AI
- API
- Architect
- Backend
- Cloud
- Support
- Java
- Kafka
- Kubernetes
- LLM
- NATS
- Oracle
- PostgreSQL
- Spring
- Spring Boot
- TOGAF
- microservices
More:
We are hiring a Senior Java Engineering Architect for a contract or permanent role based in London, with four days a week in the office and one day from home. We offer a rate of £120K per annum or £500 per day inside IR35. We are looking for a highly experienced technology leader to help shape next-generation banking and payment platforms, work with globally distributed teams, and contribute to AI-driven engineering innovation.
last updated 34 week of 2026
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About Third Nexus Group Limited
Third Nexus Group Limited
London
IT
Skills & Technologies
Inferred from job description
Salary Insight
£110,000
This role
£75,000
UK median
This salary is 47% above the UK median for Senior roles (£75,000/yr).
Based on 2024–2025 UK technology sector benchmarks